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Diffstat (limited to 'spi/spiflash/fidelix_fm25q32/quadspi/README')
| -rw-r--r-- | spi/spiflash/fidelix_fm25q32/quadspi/README | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/spi/spiflash/fidelix_fm25q32/quadspi/README b/spi/spiflash/fidelix_fm25q32/quadspi/README new file mode 100644 index 0000000..69c5f29 --- /dev/null +++ b/spi/spiflash/fidelix_fm25q32/quadspi/README @@ -0,0 +1,30 @@ +------------------------------------------------------------------------------- +FIDELIX FM25Q32 +------------------------------------------------------------------------------- + +This is a set of example captures of a FIDELIX FM25Q32 SPI flash chip +(32MBit == 4Mbyte) that is read by ESP32. + +First part is the 2nd-stage bootloader loaded from SPI flash (using +QuadSPI @ 10MHz). Then the 2nd-stage bootloader loads 02_blink (from SPI +flash to SRAM) and executes it. + +The SPI hardware used is ESP32 DevKitC (from ESPRESSIF). + +Details: +https://espressif.com/sites/default/files/documentation/esp32-devkitc_getting_started_guide_en.pdf + + +Logic analyzer setup +-------------------- + +The logic analyzer used was a DreamSourceLab DSLogic (at 100MHz): + + Probe FM25Q32 pin + ----------------------- + 0 CS + 1 CLK + 2 IO0 + 3 IO1 + 4 IO2 + 5 IO3 |